Organization Flashcards
What is a tissue
A group of specialised cells that work together
What is an organ
A group of tissues working together
What enzyme breaks down
- starch
- proteins
- fats
Amylase
Protease
Lipase
What are 2 functions of bile
Emulsifies fats,neutralises stomach acid
What are the products of digestion of
- starch
- proteins
- fats
- glucose
- amino acids
- fatty acids and glycerol
Why are enzymes so specific
The shape of their active site matches the shape of their substrate
What factors cause the active site of an enzyme to change shape
Temperature and ph increase/decrease
What is an enzyme
A biological catalyst
What are the 4 components of blood
White blood cells, red blood cells, plasma, platelets
What are the upper and lower chambers of the heart
Upper - atria
Lower- ventricles
Adaptations of
- veins
- arteries
- capillaries
- valves to prevent back flow
- elastic walls
- 1 cell thick
What is the structure in the lungs where gas exchange take happens
Alveoli
How is oxygen transported in the blood
Red blood cells attached to haemoglobin
